Resilient wheel.



W. F. DOLL.

RESILIENT WHEEL.

APPLICATION man IUNE24, 1914.

Patented Apr. 20, 1915.

lNI/E/VTUR ATTORNEY \s Qs 7 THE NORRIS PETERS 60.. FHOTO-LITHO.. WASHINGTON. D. c.

SAID LEE MQCLUNG, DECEASED.

S FAILFQNT FICE.

WILLIAM F. DOLL, OF NEW YQRK, N. Y., ASSIGNOR OF ONE-HALF WASEINGTON, DISTRICT OF COLUMBIA TO LEE MCCLUNG, OF

; ROBERT G. MCCLUNG ADMINISTRATOR OF RESILIENT WHEEL.

Specification of Letters Patent.

Patented Apr. 20, 1915.

Application filed June 24, 1914. Serial No. 847,036.

To all whom it may concern Be it known that I, l/VILLIAM: F. DOLL, a citizen of the United States, residing in the borough of Manhattan, city of New York, county of New York, and State of New York, have invented new and useful Improvements in Resilient Wheels, of which the following is a specification.

This invention has reference to spring wheels, pulleys and the like, and its aims are to provide the same with certain new and useful features substantially as hereinafter described and particularly pointed out in the subjoined claims.

In the accompanying drawings I have illustrated what I at present regard to be the preferred embodiment of the invention, but it is to be understood that the invention may be otherwise embodied without departing from its spirit or the scope of the subjoined claims.

In said drawings, wherein like characters of reference denote similar parts in the several views: Figure 1 is a side elevation of a resilient wheel embodying the present improvements with a portion broken away, Fig. 2 is a section on the line 22 of Fig. 1. Fig. 3 is a vertical longitudinal section through the hub or axial portion of the wheel, drawn to a larger scale than the preceding figures. Fig. 4 is a detail view of one of the casings with a portion thereof broken away. F ig. 5 is a vertical section on the line 55 of Fig. 4. Figs. 6 and 7 are detail views exemplifying different forms of rims for use with difl erent forms of rails when the invention is embodied in a car wheel; and Fig. 8 is a detail view exemplifying a form in which each coil at the axial part of the wheel carries a plurality of spokes.

The wheel herein illustrated to exemplify the present invention is formed of members A, B, C and D, having axially coiled parts 0., b, c and d and spokes a, 6 0 and (Z10 extending outward from the axially coiled parts: a rim E to which the outer ends of the spokes are suitably connected: and incasing means for the axially coiled parts, com prising members F, G, H and I having chambers f, g, h, and 2' to receive said axially coiled parts and openings F", 9 71. and 2' to permit the spokes to extend therethrough. The parts are so correlated that in the completed wheel the axially coiled parts a-d,

inclusive, will lie one beside another, with their axial openings alined to receive a shaft" or axle J, or other device, and will be separated from each other by and inclosed in the members FI, respectively, and the spokes will project radially from the said axially coiled parts and will extend through the openings f z' in the members F-I.

A suitable device extends through the alined openings of the springs ad and also through alined openings of the members F-I, the springs encircling said device and being in turn encircled by the outer walls of said members, and the latter are suitably secured to said device against axial and longitudinal movement thereon. In this particular exemplification of the invention, the device referred to is the shaft or axle J, it being preferred to have the latter rotate with the wheel. If, however, it is desired, for example, to have the wheel rotate relatively to a stationary shaft, a device, such as a sleeve or cylinder to receive said shaft, may be utilized. For connecting the shaft or other device to the members FI, the former is preferably formed with a suitable ,number of lugs 10 to engage appropriate recesses 11 in the members FI. In

practice it is preferred to provide four lugs for each member FI, the latter having a corresponding number of recesses to receive said lugs, but said number may be varied, if desired. It is also preferred to form the part of the shaft or axle upon which the members FI and coiled springs ad are mounted of less diameter than the adjacent part of the shaft or axle, so as to form a shoulder ,7 against which the line of members F'I may be tightly held by suitable means, such, for example, as a clamping nut K mounted on the threaded extremity of the shaft or axle.

It will be noted that among the other important purposes served by the members F-I they form means by which the power is transmitted between the spokes and the shaft or other device to which said members are secured, the spokes being fitted in the openings f -z' in such manner that while the spokes may move longitudinally in said openings under the influence of the coiled springs, the latter do not form any part of the means through which rotative movement is communicated between the hee a d the related with the coils as to permit free expansion and contraction thereof, whileseparating them from'each other and preventing lateral displacement andv wabbling move- I ment thereof, thereby materially contributing to their free resilient action. Again, the outer walls of the members F-I protect the springs against atmospheric influences and dust and dirt.' f I In practice, it is preferred to form' each of the members FI of two complementary sections each having a side wall and a peripheral flange 101, the peripheral flanges extending toward each' other and having their abutting edges preferably arranged so that one, will overlap the other, the underlapping edge being preferably formed to provide a seat for the overlapping edge, as shown best in Fig. The portions of the members which form the openings f z' are preferably formed to provide flanges 102 which surround said openings and 'bear'againstthe sides of the spokes. The sidewalls 100'are formedrwith openings to. receive the shaft J, or otherodevice employed in lieu of such shaft, and the cir cumferential walls of said openings are formed to provide recesses 11 hereinbefore referred to. a

The rimE may be of any Suitable shape in of concavo=convex form engaged with a convex rail. In Fig. 7 I have shown a rlm marked E having a flat sectionc and aconcave section 0 the concave section be- 1ng provlded with a sound-deadening and wear-reducing substance e Thls, form 1s particularly advantageous for use with a T- rail. WVhile I have illustrated, in Figs. 6 and 7, the rim as being mounted upon a rail it will of course be understood'that the invention is not restricted to car wheels. I I have exemplified the invention in a wheel madeup of four members, each having a spoke and a coiled spring, but it will be apparentjthat this particular number of spokes is not essential and that the invention may be embodied in a wheel having any suitable number of spokes. In many cases it is preferred to form the spokesand springs integral with each other. In some cases the spokes may be formed separately from the springs and secured tothe ends of tlielatter in any appropriate way, as by means of vwelds or rivets. ,In other cases, each spring may be provided with a plurality of spokes, in which event it is pre-' ignates a spoke integral therewith and a? rim integral with the spokes} or. tohave a ferred to form one spoke integral with tllf i' spring and to suitably secure an additional 8, wherein a designates a spring, e 3 desdesignates a separate spoke which is suitably 4 secured to the outer coil of the spring. The members ad'hereinbefore described: 1

are each preferably formed from channel iron having oneend thereof gradually flat tened, the flattened part forming the coiled,

spring and the part which remains of chan nel formation forming the spoke. This provides rigid spokes terminating in intee gral springs a portion of which springs are of gradually widened formation, it. being 5 noted, by referenceto Fig. 3, that the itaper of the spring partpreferably does not extend throughout the length ofjsaid spring partibut terminates near the spoke and is principally in that partrofflthe member 1 1 which joins the spoke to the spring. By thus having a plurality of coils of substan:

tially the samewidth, andby makingthis width substantially the sameas the diame ter of. the member which is to incase [the coils, the lateral displacement of thec ils and the tendencyof the .coils to wabble'jis" more'eflectively overcome.

' It will be noted upon reference to Fig.

that the spokes are laterally ofiset in order that their outer ends may abut against the inner surface of the separately formed-rim E; WVhilein this particular exemplifica tion I have shownthe; separately formed rim, and prefer the same, itshould be une I.

v derstood that it will not be a departure cross section. In Fig. 6 I have shown a rim from thespirit of. the invention to, form the j plurality of rims arranged side side.

Exemplificationsof the latter arrangements V are shown in my. co-pending application 5 filed January 2-1, 1914, Serial No. 814,16Q... U

Moreover, while I prefer. to form the parts ad fromo cha-nnel-iron, this is not altogether essential as they may be made from x fiat strips, as shown-in my copending,ap-, :i P r -D .8 elc5, filedJanuary 24, 1914.. I

The several wheels exemplified in the two may be usefully employed, and, therefore,

I would have it understood that my present lnvention, considered in its broadest aspects,

is not restricted to, any of the particular embodiments herein illustrated," or; re

ferred to.

Having thus described the invention what Letters Patent, is.

I believe to be new a'nddesire to secure by A resilient wheel havlngr a plurality of members each provided with a coiled spring;

at its endand with a spoke extending outward from the coiled spring, said members being so arranged that the spokes will extend radially from the springs and :the springs will'lie beside each other with their axial openings alined, and means forming chambers which receive sa d springs and having openings through which the spokes extend.- r Y 2. A resilient wheelhaving a plurality of members each provided with a coiled spring at its end and with a spoke extending out ward from the coiled spring, said members being so arranged that thespokes will extend radially from the springs and the springs will lie beside each other with their axial openings alined, a device extending through thealined openings of the springs, and means connected towsaid device and spokes and transmitting movement between the same, said meanshavingchambers which receive the springs, respectively.- i

3. A resilient wheel having a plurality of :Inembers each provided with a coiled spring at its end and with a spoke extending outward from the coiled spring, said members being so arranged that'the spokes will extend radially from the springs and the springs will lie beside each other with their axial openings alined, a] shaft extending through the alined openings of the springs, and" means connected to said shaft and spokes and transmitting movement between a the same, said means having chambers which recelve the springs, respectively.

7 4. A resilient wheel having a plurality of I members each provided with a coiled spring at its end and with a spoke extending outward from the coiled spring, said members being so arranged that the spokes will extend radially from the springs and springs will lie beside ,each other with the axial openings alined, a shaft which extends through the alined openings of the springs, members mounted on said shaft, the latter members being arranged to provide openings through which the spokes extend I and chambers which respectively receive the springs.

5. A resilient wheel having a plurality of; members each provided with a coiled spring f" with a spoke extending outcoiled spring, said members a y the spokes will exif at its end and ward from the being so arranged that tend radially from the springs and the springs will lie beside each other with their axial openings alined, a device extending through the alined openings of the springs, casings for said springs, said casings being mounted on the shaft and secured to the same and each comprising side walls and a circumferential wall, arranged; to contain a spring, the circumferential walls'of the casings having openings through which the spokes extend, the latter openings being openings being fitted fitted to the spokes, whereby rotary movement of said device and spokes will be transmitted through the casings,

, 6. A resilient wheel having a plurality of 7 members each provided with a coiled spring at its end and with a spoke extending outward from the coiled spring, saidmembers being soarranged that the spokes will ex- ,terid radially from the springs and the springs will lie beside each other with their axial openings alined, a device extending through thealined openings of the springs,

casings forsaid springs, said casings bein f -mounted on the shaft and secured to the sameand each comprising'a separable pair -of side members having circumferential flanges, the said side members and flanges being arranged to form a casing, having side 'Walls and a circumferential wall, each casing containing a spring, the circumferential walls ,.of the casings having openings through which the spokes extend, the latter to the spokes, whereby rotary movement of said device and V; Siflresilient wheel having a plurality of niie'ncgbe'rs each formed to provide a rigid ke'ljand a coiled spring arranged at the end of the spoke and integral there said members being so arranged. that springs and the springs will lie beside each other with their axial openings alined, a device extending through the alined openings of the springs, and means mounted on said device and inclosing said springs, said means forming chambers for device and spokes for transmitting rotary movement between the same.

M 9;Arresilient wheel having a plurality of members each formed to provide a rigid spoke and a coiled spring arranged at the innerend of the spoke and integral there with, said members being so arranged that the spokes will extend radially from the springs and the springs will lie beside each other with their axial openings alined, a shaft extending through the alined openings of the springs, said shaft having ashoulder at one end, means arranged on said shaft and secured thereto, said means forming a plurality of separate cham rs each of which spokes will extend radially from the the springs, respectively, and being connected to said portions of "the -bars, a,n"c1; a device which extends ibhrough jthe' zc'o'j ld ip'aft'slj df. the hfiis and- 15 'egit'e'nfds through said inems imd 'is connected to thl' iitefi j 3 e1 :drripning 

